csvhivebeeline

Export as csv in beeline hive

I am trying to export my hive table as a csv in beeline hive. When I run the command !sql select * from database1 > /user/bob/output.csv it gives me syntax error.

I have successfully connected to the database at this point using the below command. The query outputs the correct results on console.

beeline -u 'jdbc:hive2://[databaseaddress]' --outputformat=csv

Also, not very clear where the file ends up. It should be the file path in hdfs correct?

Solution

  • When hive version is at least 0.11.0 you can execute:

    INSERT OVERWRITE LOCAL DIRECTORY '/tmp/directoryWhereToStoreData' 
ROW FORMAT DELIMITED 
FIELDS TERMINATED BY ','  
LINES TERMINATED BY "\n"
SELECT * FROM yourTable;

    from hive/beeline to store the table into a directory on the local filesystem.

    Alternatively, with beeline, save your SELECT query in yourSQLFile.sql and run:

    beeline -u 'jdbc:hive2://[databaseaddress]' --outputformat=csv2 -f yourSQlFile.sql > theFileWhereToStoreTheData.csv

    Also this will store the result into a file in the local file system.

    From hive, to store the data somewhere into HDFS:

    CREATE EXTERNAL TABLE output 
LIKE yourTable 
ROW FORMAT DELIMITED 
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
LOCATION 'hfds://WhereDoYou/Like';

INSERT OVERWRITE TABLE output SELECT * from yourTable;

    then you can collect the data to a local file using:

    hdfs dfs -getmerge /WhereDoYou/Like

    This is another option to get the data using beeline only:

    env HADOOP_CLIENT_OPTS="-Ddisable.quoting.for.sv=false" beeline -u "jdbc:hive2://your.hive.server.address:10000/" --incremental=true --outputformat=csv2 -e "select * from youdatabase.yourtable"

    Working on:

    Connected to: Apache Hive (version 1.1.0-cdh5.10.1)
Driver: Hive JDBC (version 1.1.0-cdh5.10.1)
Transaction isolation: TRANSACTION_REPEATABLE_READ
Beeline version 1.1.0-cdh5.10.1 by Apache Hive